lcmineqlem2 - Mathbox for metakunt

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Theorem lcmineqlem2 39966

Description: Part of lcm inequality lemma, this part eventually shows that F times the least common multiple of 1 to n is an integer. (Contributed by metakunt, 29-Apr-2024.)

**Hypotheses**
Ref	Expression
lcmineqlem2.1	⊢ 𝐹 = ∫(0[,]1)((𝑥↑(𝑀 − 1)) · ((1 − 𝑥)↑(𝑁 − 𝑀))) d𝑥
lcmineqlem2.2	⊢ (𝜑 → 𝑁 ∈ ℕ)
lcmineqlem2.3	⊢ (𝜑 → 𝑀 ∈ ℕ)
lcmineqlem2.4	⊢ (𝜑 → 𝑀 ≤ 𝑁)

**Assertion**
Ref	Expression
lcmineqlem2	⊢ (𝜑 → 𝐹 = Σ𝑘 ∈ (0...(𝑁 − 𝑀))(((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) · ∫(0[,]1)((𝑥↑(𝑀 − 1)) · (𝑥↑𝑘)) d𝑥))

Distinct variable groups: 𝑘,𝑀,𝑥 𝑘,𝑁,𝑥 𝜑,𝑘,𝑥 Allowed substitution hints: 𝐹(𝑥,𝑘)

**Proof of Theorem lcmineqlem2**
Step	Hyp	Ref	Expression
1		lcmineqlem2.1	. . 3 ⊢ 𝐹 = ∫(0[,]1)((𝑥↑(𝑀 − 1)) · ((1 − 𝑥)↑(𝑁 − 𝑀))) d𝑥
2		lcmineqlem2.2	. . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ)
3		lcmineqlem2.3	. . 3 ⊢ (𝜑 → 𝑀 ∈ ℕ)
4		lcmineqlem2.4	. . 3 ⊢ (𝜑 → 𝑀 ≤ 𝑁)
5	1, 2, 3, 4	lcmineqlem1 39965	. 2 ⊢ (𝜑 → 𝐹 = ∫(0[,]1)((𝑥↑(𝑀 − 1)) · Σ𝑘 ∈ (0...(𝑁 − 𝑀))(((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) · (𝑥↑𝑘))) d𝑥)
6		eqid 2738	. . 3 ⊢ (0[,]1) = (0[,]1)
7		fzfid 13621	. . 3 ⊢ (𝜑 → (0...(𝑁 − 𝑀)) ∈ Fin)
8		0red 10909	. . 3 ⊢ (𝜑 → 0 ∈ ℝ)
9		1red 10907	. . 3 ⊢ (𝜑 → 1 ∈ ℝ)
10		unitsscn 13161	. . . . 5 ⊢ (0[,]1) ⊆ ℂ
11		resmpt 5934	. . . . 5 ⊢ ((0[,]1) ⊆ ℂ → ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ↾ (0[,]1)) = (𝑥 ∈ (0[,]1) ↦ (𝑥↑(𝑀 − 1))))
12	10, 11	ax-mp 5	. . . 4 ⊢ ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ↾ (0[,]1)) = (𝑥 ∈ (0[,]1) ↦ (𝑥↑(𝑀 − 1)))
13		nnm1nn0 12204	. . . . . 6 ⊢ (𝑀 ∈ ℕ → (𝑀 − 1) ∈ ℕ₀)
14		expcncf 23995	. . . . . 6 ⊢ ((𝑀 − 1) ∈ ℕ₀ → (𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ∈ (ℂ–cn→ℂ))
15	3, 13, 14	3syl 18	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ∈ (ℂ–cn→ℂ))
16		rescncf 23966	. . . . . 6 ⊢ ((0[,]1) ⊆ ℂ → ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ∈ (ℂ–cn→ℂ) → ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ)))
17	10, 16	ax-mp 5	. . . . 5 ⊢ ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ∈ (ℂ–cn→ℂ) → ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ))
18	15, 17	syl 17	. . . 4 ⊢ (𝜑 → ((𝑥 ∈ ℂ ↦ (𝑥↑(𝑀 − 1))) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ))
19	12, 18	eqeltrrid 2844	. . 3 ⊢ (𝜑 → (𝑥 ∈ (0[,]1) ↦ (𝑥↑(𝑀 − 1))) ∈ ((0[,]1)–cn→ℂ))
20		elfznn0 13278	. . . . . 6 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → 𝑘 ∈ ℕ₀)
21		neg1cn 12017	. . . . . . 7 ⊢ -1 ∈ ℂ
22		expcl 13728	. . . . . . 7 ⊢ ((-1 ∈ ℂ ∧ 𝑘 ∈ ℕ₀) → (-1↑𝑘) ∈ ℂ)
23	21, 22	mpan 686	. . . . . 6 ⊢ (𝑘 ∈ ℕ₀ → (-1↑𝑘) ∈ ℂ)
24	20, 23	syl 17	. . . . 5 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → (-1↑𝑘) ∈ ℂ)
25	24	adantl 481	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → (-1↑𝑘) ∈ ℂ)
26	3	nnnn0d 12223	. . . . . . . 8 ⊢ (𝜑 → 𝑀 ∈ ℕ₀)
27	2	nnnn0d 12223	. . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
28		nn0sub 12213	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (𝑀 ≤ 𝑁 ↔ (𝑁 − 𝑀) ∈ ℕ₀))
29	26, 27, 28	syl2anc 583	. . . . . . 7 ⊢ (𝜑 → (𝑀 ≤ 𝑁 ↔ (𝑁 − 𝑀) ∈ ℕ₀))
30	4, 29	mpbid 231	. . . . . 6 ⊢ (𝜑 → (𝑁 − 𝑀) ∈ ℕ₀)
31		nn0z 12273	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ₀ → 𝑘 ∈ ℤ)
32	20, 31	syl 17	. . . . . . 7 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → 𝑘 ∈ ℤ)
33		bccl 13964	. . . . . . 7 ⊢ (((𝑁 − 𝑀) ∈ ℕ₀ ∧ 𝑘 ∈ ℤ) → ((𝑁 − 𝑀)C𝑘) ∈ ℕ₀)
34	32, 33	sylan2 592	. . . . . 6 ⊢ (((𝑁 − 𝑀) ∈ ℕ₀ ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → ((𝑁 − 𝑀)C𝑘) ∈ ℕ₀)
35	30, 34	sylan 579	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → ((𝑁 − 𝑀)C𝑘) ∈ ℕ₀)
36	35	nn0cnd 12225	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → ((𝑁 − 𝑀)C𝑘) ∈ ℂ)
37	25, 36	mulcld 10926	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → ((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) ∈ ℂ)
38		resmpt 5934	. . . . . 6 ⊢ ((0[,]1) ⊆ ℂ → ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ↾ (0[,]1)) = (𝑥 ∈ (0[,]1) ↦ (𝑥↑𝑘)))
39	10, 38	ax-mp 5	. . . . 5 ⊢ ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ↾ (0[,]1)) = (𝑥 ∈ (0[,]1) ↦ (𝑥↑𝑘))
40		expcncf 23995	. . . . . . 7 ⊢ (𝑘 ∈ ℕ₀ → (𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ∈ (ℂ–cn→ℂ))
41	20, 40	syl 17	. . . . . 6 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → (𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ∈ (ℂ–cn→ℂ))
42		rescncf 23966	. . . . . . 7 ⊢ ((0[,]1) ⊆ ℂ → ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ∈ (ℂ–cn→ℂ) → ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ)))
43	10, 42	ax-mp 5	. . . . . 6 ⊢ ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ∈ (ℂ–cn→ℂ) → ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ))
44	41, 43	syl 17	. . . . 5 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → ((𝑥 ∈ ℂ ↦ (𝑥↑𝑘)) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ))
45	39, 44	eqeltrrid 2844	. . . 4 ⊢ (𝑘 ∈ (0...(𝑁 − 𝑀)) → (𝑥 ∈ (0[,]1) ↦ (𝑥↑𝑘)) ∈ ((0[,]1)–cn→ℂ))
46	45	adantl 481	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 − 𝑀))) → (𝑥 ∈ (0[,]1) ↦ (𝑥↑𝑘)) ∈ ((0[,]1)–cn→ℂ))
47	6, 7, 8, 9, 19, 37, 46	3factsumint 39961	. 2 ⊢ (𝜑 → ∫(0[,]1)((𝑥↑(𝑀 − 1)) · Σ𝑘 ∈ (0...(𝑁 − 𝑀))(((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) · (𝑥↑𝑘))) d𝑥 = Σ𝑘 ∈ (0...(𝑁 − 𝑀))(((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) · ∫(0[,]1)((𝑥↑(𝑀 − 1)) · (𝑥↑𝑘)) d𝑥))
48	5, 47	eqtrd 2778	1 ⊢ (𝜑 → 𝐹 = Σ𝑘 ∈ (0...(𝑁 − 𝑀))(((-1↑𝑘) · ((𝑁 − 𝑀)C𝑘)) · ∫(0[,]1)((𝑥↑(𝑀 − 1)) · (𝑥↑𝑘)) d𝑥))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ⊆ wss 3883 class class class wbr 5070 ↦ cmpt 5153 ↾ cres 5582 (class class class)co 7255 ℂcc 10800 0cc0 10802 1c1 10803 · cmul 10807 ≤ cle 10941 − cmin 11135 -cneg 11136 ℕcn 11903 ℕ₀cn0 12163 ℤcz 12249 [,]cicc 13011 ...cfz 13168 ↑cexp 13710 Ccbc 13944 Σcsu 15325 –cn→ccncf 23945 ∫citg 24687

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-inf2 9329 ax-cc 10122 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 ax-addf 10881 ax-mulf 10882

This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-iin 4924 df-disj 5036 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-of 7511 df-ofr 7512 df-om 7688 df-1st 7804 df-2nd 7805 df-supp 7949 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-2o 8268 df-oadd 8271 df-omul 8272 df-er 8456 df-map 8575 df-pm 8576 df-ixp 8644 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-fsupp 9059 df-fi 9100 df-sup 9131 df-inf 9132 df-oi 9199 df-dju 9590 df-card 9628 df-acn 9631 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-4 11968 df-5 11969 df-6 11970 df-7 11971 df-8 11972 df-9 11973 df-n0 12164 df-z 12250 df-dec 12367 df-uz 12512 df-q 12618 df-rp 12660 df-xneg 12777 df-xadd 12778 df-xmul 12779 df-ioo 13012 df-ioc 13013 df-ico 13014 df-icc 13015 df-fz 13169 df-fzo 13312 df-fl 13440 df-mod 13518 df-seq 13650 df-exp 13711 df-fac 13916 df-bc 13945 df-hash 13973 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-limsup 15108 df-clim 15125 df-rlim 15126 df-sum 15326 df-struct 16776 df-sets 16793 df-slot 16811 df-ndx 16823 df-base 16841 df-ress 16868 df-plusg 16901 df-mulr 16902 df-starv 16903 df-sca 16904 df-vsca 16905 df-ip 16906 df-tset 16907 df-ple 16908 df-ds 16910 df-unif 16911 df-hom 16912 df-cco 16913 df-rest 17050 df-topn 17051 df-0g 17069 df-gsum 17070 df-topgen 17071 df-pt 17072 df-prds 17075 df-xrs 17130 df-qtop 17135 df-imas 17136 df-xps 17138 df-mre 17212 df-mrc 17213 df-acs 17215 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-submnd 18346 df-mulg 18616 df-cntz 18838 df-cmn 19303 df-psmet 20502 df-xmet 20503 df-met 20504 df-bl 20505 df-mopn 20506 df-cnfld 20511 df-top 21951 df-topon 21968 df-topsp 21990 df-bases 22004 df-cn 22286 df-cnp 22287 df-cmp 22446 df-tx 22621 df-hmeo 22814 df-xms 23381 df-ms 23382 df-tms 23383 df-cncf 23947 df-ovol 24533 df-vol 24534 df-mbf 24688 df-itg1 24689 df-itg2 24690 df-ibl 24691 df-itg 24692 df-0p 24739

This theorem is referenced by: lcmineqlem3 39967

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